Wilhelm voit



No. 626,947. Y Patented lune I3, |899.

w. vul'r.

STEAM ACTUATED VALVE.

(Application tiled Oct. 12, 1898.)

(N o M o d el in Q N NH umu UNITED STATES PATENT OFFICE.

IVILHELM VOIT, OF MAGDEBURG, GERMANY.'

STEAM-ACTUATED VALVE.

SPECIFICATION forming' part of Letters Patent No. 626,947, dated June 13, 1899.

Application filed October 12, 1898.

T0 all whom, it may concern:

Beit known that I, WILHELM Voir, a citizen of the United States, residing at Magdeburg, in the Kingdom of Prussia, Germany, have invented certain new and useful Improvements in Steam-Actuated Valves for Direct-Acting Steam-Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention relates to a novel construction in a direct-acting steam-engine, the object being to provide a simple and eflicient manner of mounting and guiding the valves; and it consists in the features of construction and combinations of parts hereinafter fully described and claimed.

In the accompanying drawings, illustrating my invention, Figure l is a sectional view of a fluid-pressure-actuated valve for a steamengine constructed in accordance with my invention, taken on the line 1 l of Fig. 2. Fig. 2 is a sectional View of same on the line 2 2 of Fig. l. Fig. 3 is a sectional view on the line 3 3 of Fig. 2. Fig. 4 is a sectional view similar to Fig. 2, illustrating a slightlymodified form of construction of the valveseat. Fig. 5 is a top plan view of the valveseat.

Referring now to said drawings, A indicates the valve casing or chamber of a steamengine, into which steam is admitted through the opening B, said chamber A thus forming the steam-supply for said engine and also for the fluid pressure valve actuating devices hereinafter described. An exhaust-port C leads from said chamber Aand is adapted to receive the exhaust-steam from the cylinder and from the valve-actuating devices before referred to. Passages D and E lead from said chamber A to the cylinder F, and said passages and the 'exhaust-port C are controlled by the main valve G, which is reciprocated and controlled by means of a piston I'I, having cylindrical ends .fitting within cylindrical chambers I and I', forming a part of the chamber A. Said chambers I and I beyond the ends of said piston II are connected withthe auxiliary-valve ports J 2 J 3 by means of the passages J and J', which and Serial No. 693,287. (No model.)

the supplemental exhaust-port K are controlled by the supplemental valve L,- mounted adjacent said main valve G. Said valves G and L are mounted on the same seat and are guided by each other and by the side faces M of said casing A. Said valves move at different times and, so to speak, in opposite directions, and as the wear on the valve-seat will not be tbe same I outa groove Ntherein below the point of Contact between said.

valves, whereby I practically form two valveseats, neither of which will be affected by the wear on the other. By thus forming said valve-seat I obviously save a great deal of planing, the most expensive kind of machine labor, and obviate the expense of an additional guide.

In Fig. 4 I have illustrated a slight modific-ation in which the supplemental-valve seat is slightly lower than the main-Valve seat and slightly wider than the supplemental valve, so that the main valve projects slightly over said supplemental-valve seat, thus forming a substitute for the groove N without altering the relative arrangement of said valves and making each still serve as a guide for the other. Said supplemental valve L is operated from the rod O, which passes through'a slotl in one of lthe upwardly-extending lugs 2 on said valve and. enters a screw-threaded sleeve 3, mounted between said lugs 2, which is guided by the latter, or rather serves as a guide therefor. Said rod O is screw-threaded at its end and Vis carefully adjusted in said sleeve and locked in position by means of the plug 4. Said slots l obviously permit said valve free vertical movement with relation to said rod O, while said lugs 2 guide said valve in such movement, thus allowing said valve to adjust itself on its seat. Said supplemental-valve rod O is driven from the piston-rod of the engine by means of any suitable valve-gear. The connection between the main valve and said piston II is also such as to leave said valve free to move vertically, and thus adj ust itself on its seat.

The operation of said valves is as follows The chamber A is always filled with live steam, which serves to hold said valves Grandv L down upon their seats and, as before stated, serves as a steam-supply for the cylinder and f limits of their movement.

the main-valve-actuating devices. Presuming the valve L to have just assumed a position connecting the port J2 with the steam.- supply and port J 3 with the supplemental eX- haust K, steam would obviously be admitted to chamber I through 'passages J and force said piston H and valve G to the opposite In this position of the valve G the port D would be connected With the steam-supplyvand the port E with the exhaust C. As the piston in cylinder F (which moves parallel with piston H) approaches the right-hand-limit of its movement (referring to Fig. l) the valve L vwould be shifted to connect port J2 with the exhaust K and port J3 with the steam supply, and steam would thus be admitted to chamber Il and exhausted from chamber I, thus causing the piston I-I to shift the valve G to connect port D with the exhaust and port E with the steam-supply, thus forcing the piston in cylinder F to the left-hand limit of its movement. On the middle portion of saidvalve G, I provide a bushing 5, in which a screw-threaded opening G is provided. Said opening is in vertical alinement with the openings 7 and 8 in the middle portion of said piston H, and at the middle of the stroke of said piston said openings 7 and S are iu alinement with the opening 9 in the casing of chamber A, which is adapted to receive an oil-cup. Said openings 6, 7, 8, and 9 enable me to hold said valve G in place, When mounting said casing A on the engine, by inserting4 the screwthreaded end of a rod 10 through said openings 9, 8, and 7 and into said opening 6, thereby engaging said valve G. Said rod is provided with a loop 11 at its other end, which is of greater diameter than said opening 9 and is adapted to engage the Wall of said casing around said opening to firmly hold said Valve G in position. The supplemental valve is held in place in said casing A, when mounting the latter, by means of the rod O, which in turn is firmly held in place by the stuiingbox 12.

My device is extremely simple, durable, efficient, and cheap and cannot readily get out of order.

I claim as my inventionl. In a direct-acting steam-engine, a main and a supplemental valve mounted side by side upon a common valve-seat and adapted to guide each other, and a groove in said valveseat in alinement With the point 0f contact of said valves, thereby dividing said valveseat, substantially as described.

2. In asteam-engine, a valve-casing adapted to lit over a valve-seat and receive valves, and means for holding said valves in place in said valve-casing While mounting the latter, substantially as described.

3. In a steam-engine, a valve-casing adapted to lit over a valve-seat and receive valves, and means for holding said valves in place in said valve-casing while mounting the latter, comprising rods adapted to pass through openings in said valve-casing and engage said valves, substantially as described..

1l. In a steam-engine, avalve-casingadapted to fit over a valve-seat and receive valves, and means for holding said valves in place in said valve-casing while mounting the latter, comprising rods screw-threaded at one end adapted to pass through openings in said valve-casing and to enter and engage screwth read ed recesses in said valves, and heads on said rods of greater diameter than said openings in said casin g adapted to engage the Wall of said casing surrounding said opening, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

WILHELM VOIT.

Vitnesses: Y

RUDOLPH WM. Lorz, ERWIN J. LoTZ. 

